The Rules:- chinup, pullup, hammer grip, whatever they all count the same as long as you dont switch during the set- chin needs to raise above or touch the bar to be consistent ( I know some people touch chest to bar, good for them). - try not to kip, probably expectable for the last couple of reps. - if there is a tie with number of reps the heavier person gets the top position. - each rep from a dead hang